Can the 920 run totally off an SD card (backup issue)

[F2]

I've read a few threads where folks have somehow bollixed up their units and lost maps or other necessities for using the TT.

I know the unit can use parallel files and folders on a sd card. So I was wondering if copying INTERNAL memory to a 4gig card would allow the TT920 to function if the internal storage got accidently blown away.

I was also wondering if anyone has tried one of those usb-bridge type devices that can connect two different usb devices and move files/folders back and forth with a TT.

I don't generally take a laptop on my car camping trips in the States but being able to get back a functioning gps using other methods might be worth considering.

Thanks in advance

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